Springer Verlag, SCIENCE CHINA Physics, Mechanics and Astronomy, 5(58), p. 1-6
DOI: 10.1007/s11433-014-5635-6
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Ground state cooling of massive mechanical objects remains a difficult task restricted by the unresolved mechanical sidebands. We propose an optomechanically-induced-transparency cooling scheme to achieve ground state cooling of mechanical motion without the resolved sideband condition in a pure optomechanical system with two mechanical modes coupled to the same optical cavity mode. We show that ground state cooling is achievable for sideband resolution $ω_{m}/κ$ as low as 0.003. This provides a new route for quantum manipulation of massive macroscopic devices and high-precision measurements. ; Comment: 6 pages, 5 figures